Here's my synthesis of many of the proposed GC mods including a discrete class A o/p buffer (similar to Andrea Ciuffoli's), Steve's tie-down CCS for the LM3875, differentially-driven inverting 'clone, tube buffering and a bit of tube gain...
I think I'll call it the superduperultradeluxebanzaichocdipclone...
Some aspects might need a bit more detailed attention but it should work in principle... move over Krell, you overpriced grunge-mongers!
I think I'll call it the superduperultradeluxebanzaichocdipclone...
Some aspects might need a bit more detailed attention but it should work in principle... move over Krell, you overpriced grunge-mongers!
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Wow, what an overkill. I'd rather go the parallel/bridge way if i wanted more power, but maybe the output's not too bad. What really annoys is the input. How much gain can the LTP provide? As you actually don't need any in this position. An LTP set to unity? And then let's burn some more in the followers! And what are the followers for? To really screw up the sound? If the volume control was incorporated in the input section it would still make some sense...
But then it wouldn't be class A, now would it... Which is the whole point of my recent posts, and Steve's. Check back...
It annoys? Does this have anything to do with those pesky, enigmatic "microdynamics"...
How long is a piece of string... depends on what tubes you use, the load resistors and how much cathode degeneration (ie size of balance pot). Around 4-5 I'd guess with an ECC82, reduced by around 10% through the followers.
Er, yes... it does work you know... But some gain is useful here, relax!. Point of LTP here is to differentially drive the LM.
What are followers ever for? Reduce Zout naturally, because input resistances are likely to be on the low side in this LM configuration I've used, and driving them directly from the anodes is probably not the best idea. And if you use too large R values to up Zin without followers, you could run into some trouble at higher frequencies.
And what if the volume is in the pre-amp... does that still make some sense?
DrG said:
Actually it doesn't. Why would you add all that front end and then use a preamp? To screw up the sound even more?😉 No, it doesn't make sense, unles of course, your aim is to "discover the hundreds of additional mods/upgrades/whatever possible in discrete design".
Re: sacrilege?
Fine. Then arrive at it. What's it to do with me and what I suggested though? I don't care what "most people" may or may not want. I simply offered up a suggestion that some may find useful.
Why do you keep approaching it as if this were some corporate board meeting and our job is to pick a singular design to put into production and you're trying to convince the other board members to go along with your choice?
See what I mean? Why does there need to be any "compromise" and what's it matter what I think of such a concept?
Why can't you simply say "This is what I would do..." and just leave it at that? Why does anything else need to be dragged into it? Just let each suggestion stand on its own and leave everyone else to make their own decisions from there.
se
DrG said:
Fine. Then arrive at it. What's it to do with me and what I suggested though? I don't care what "most people" may or may not want. I simply offered up a suggestion that some may find useful.
Why do you keep approaching it as if this were some corporate board meeting and our job is to pick a singular design to put into production and you're trying to convince the other board members to go along with your choice?
See what I mean? Why does there need to be any "compromise" and what's it matter what I think of such a concept?
Why can't you simply say "This is what I would do..." and just leave it at that? Why does anything else need to be dragged into it? Just let each suggestion stand on its own and leave everyone else to make their own decisions from there.
se
I was having fun throwing ideas and problems back and forth... It's called debate. The point is to strip an issue right down by successively challenging disagreed items and possibly learn something in the process. Hell, I learned quite a few things and had a good time too.
Unfortunately I have a low tolerance for some (other) sources of incessant noise...
Now as you are a builder of amps, I am asking your opinion on a simple proposal and challenging points with which I disagree, as you challenge and disagree. And if methodical differences exist then so too do personalities. I will respect all logical, substantiated opinions although we might disagree, and extend to you the same courtesy. No boardroom sales analogies please... they're not relevant and would imply misperceived motives.
My opinion is that more musical enjoyment exists beyond the confines of a gainclone. My aim with the silly over-the-top banzaiclone joke was to show just how many mods are possible.
By extension of your dim view of pre-amplifiers, your ideal system should theoretically be a neat, compact little music centre, complete with LM chip at it's heart: no input wires, no pre-amp... hell if you bought two and stowed them inside your speakers you wouldn't even need speaker cable... just 2 weeny little power cords to each speaker...lol
Come on guys,
“Complicate things as much as can, especially if it can be done simple”.
Curious about how DrG will appreciate the sound of his contraption when he has build the thing. Of course I expect some progress reports with in-depth technical reasoning on this board.
“Complicate things as much as can, especially if it can be done simple”.
Curious about how DrG will appreciate the sound of his contraption when he has build the thing. Of course I expect some progress reports with in-depth technical reasoning on this board.
DrG said:
Hey, I enjoy a good debate as much as anyone. But I just don't see what there is to debate here. You say the point is to strip an issue right down by successively challenging disagreed items. But I don't disagree with anything here with the possible exception of how you're approaching things.
For example, you suggested as an alternative to single-ended class A by way of current source, to use a symmetrical FET follower. I see that as a perfectly viable approach.
So what exactly is there for me to disagree with, except that I disagree that there's something to disagree about?
My only opinion is that your suggestion was just fine and I see nothing to challenge or disagree with. My only disagreement is with the notion that one approach is somehow inherently more "right" than another.
So what else should I be challenging or disagreeing with?
se
Sorry to disappoint you, Pjotr but I will most certainly not be building the contraption in question. It was sketched only to illustrate a point. But let me tell you this: if even one gaincloner reads all this banter and begins to wonder what more may be possible, then I've probably contributed in some small way to diy-fi as a whole and would consider that an accomplishment, even if I pi$$ed on a few egos along the way.
And today I again received e-mail from such a germinal lateral thinker. Which makes two in total. Mission accomplished!
Whatever rings untrue in your perception, conventional wisdom, narrow-mindedness - hell, whatever you like...
Many landmark audio icons were created on this premise of innovation, often with a touch of creative arrogance, overt or subtle. From the venerable Williamson amp to the McKintosh and EAR's, Western Electric to Audio Note, Linsley-Hood to Madrigal, Blomley to Leach. Far fewer "imitators" achieved as much regard - the NAD 3020, Rotel 810A, Audiolab 8000A etc come to mind. Whereas the innovative landmarks are possibly beyond debate, the "imitators" (sorry, couldn't find a better descriptive term...) are open to plenty of personal interpretation.
My motto is "Don't imitate, innovate!"
If you think this all translates into ego then c'est la vie... redde caesar quae sunt caesaris!
janneman said:
DrG said:
“De beste stuurlui staan aan wal”
In this "case" the shore of South Africa.
😎
Die wal is veiligste, met 'n onseewaardige boot, stem jy nie saam nie...? Ek het meer bevredigende bote om te stuur en te geniet. Maar voel vry om met oogklappe die lewe deur te maak... dis jou keuse...
Hi,
This actually starting to be a funny thread, LOL.
Ek ook, maar wat helpen kaars en bril als den uyl nie sienen wil?
Cheers,😉
This actually starting to be a funny thread, LOL.
Ek ook, maar wat helpen kaars en bril als den uyl nie sienen wil?
Cheers,😉
DrG said:
Please explain me:
Wat moet ik met een containerschip in de Amsterdamse grachten 🙄
Well err yes, but I have never seen a sign pointing to Rome that went itself to Rome. Seeing Rome is actually going to Rome yourself.
How very Rome-antic... but fortunately I don't have the first clue what it is you're trying to say... Ciao bella!
I could make an anatomically difficult (and probably lethal) suggestion for what you could do with your "containerschip"...
But we digress... this is not a medieval torture-forum. Just tell me: since you hold the GC in high esteem, is this because you truly think it represents the epitome of musical enjoyment (and if so, what is your frame of reference please), or because you cannot build anything better?
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